(SOLVED) Can someone help me with kinematic collisions?

Questions
#1

I am working on a 2D RPG. Right now, im trying to sort out interactions between the player and it environment (collisions) and I am having trouble with kinematic collisions. When the players collider meets with the environments (a rock) collider, they get stuck on each other. I know that the common way to fix this is to resolve the collision with some code but im a very new coder and have no clue how to do that. I decided to check out the RPG map sample, and it uses this chunk of code for its collisions:

elseif message_id == hash("contact_point_response") then
	-- simple collision solver
	local proj = vmath.dot(self.correction, message.normal)
	local comp = (message.distance - proj) * message.normal
	self.correction = self.correction + comp
	go.set_position(go.get_position() + comp)
end

end

This code doesn’t work for me and I don’t know why, or if it would even work in the first place. Can anyone help me with my issue?

#2

What happens? Nothing?

They should also be on line of code in your update () function to reset the correction variable.

2 Likes
#3

Without the code, the collisions don’t work (the player and the object pass through each other), but with the code the player and the object get stuck on each other.

I also believe it is in the update function, I don’t know if this is what you mean

self.correction = vmath.vector3()

I think tweaking this code would probably make it work but I don’t know how to go about that.

#4

Ok, so I did some random tinkering and I changed self correction from
self.correction = self.correction + comp

to

self.correction = self.correction + comp + comp

Then I changed
go.set_position(go.get_position() + comp)

to

go.set_position(go.get_position() + self.correction)

For some reason this makes it so the player does not stick, but its very bouncy and spammy when it does come in contact. For now this will work but I have no clue how to fine tune it in the furture.

#5

I would recommend that you read the following section of the physics manual:

#6

Thanks!